Practical, research-backed articles from Chris Keith, who has over 30 years of personal training in San Diego. Chris writes about strength training, weight loss, mobility, nutrition, injury recovery and training at every age, from teenagers to adults 70+. Each article answers a question clients ask in the studio and ends with simple steps you can use right away.
Start here: Strength Training for Beginners · Gradual Progressive Overload · 5 Laws of Strength Training · How much a personal trainer costs in San Diego · Is a personal trainer worth it?
Want 1-on-1 help? See training for weight loss, adults 40+, 50+, 60+ and 70+, teenagers, beginners and strength training after physical therapy, or text Chris at (619) 840-9099 for a free consultation.
Progressive Overload: How to Get Stronger Without Getting Hurt
Progressive overload is how you keep getting stronger. Learn 5 ways to progress safely, how much to add, and the warning signs, from a San Diego trainer.
Exercise for Mental Health: Why Movement Is Medicine for the Brain
How does exercise for mental health work? Learn how movement changes brain chemistry, eases stress and protects memory, plus a simple weekly routine.
Exercise and the Brain: How to Train Your Brain Like a Muscle
Exercise and the brain are closely linked. Learn how training rewires habits, builds resilience and boosts BDNF, plus simple ways to start this week.
Getting Back Into Exercise: The Physiology of Momentum
Getting back into exercise after a break? Learn why the first workout feels hardest, how momentum works in your brain, and a simple 4-week restart plan.
Evidence-Based Fitness: Why Science Matters to Your Health
Evidence-based fitness skips the trends and sticks to what research shows works: strength, daily movement, good food, sleep, stress control and connection.
Intermediate Workout Plan: A Simple 14-Day Program That Works
A 14-day intermediate workout plan mixing strength circuits, conditioning and cardio days. Includes sets, reps, recovery days and how to scale it for you.
